remix of Blecheimer's beautiful work.

The Sunlu S2 is a really good filament dryer. But it has a major design flaw: The hot air cannot vent out. There is simply no large enough opening in the top cover.
I redesigned its spacer creating it a little smaller and shorter in order to keep the lid less open. The same result is obtained in terms of % humidity, making the internal temperature more constant in my opinion. The use of PLA is not recommended. Print in PETG or other heat-resistant materials.